#include<time.h>
#include<stdlib.h>
int main()
{
    int tol=0;
    printf("\n**********catch thirty**********\n");
    printf("Game Begin\n");
    randomize();
    if(random(2)==1)
    tol=input(tol);
    while(tol!=30)
    if((tol=copu(tol))==30)
    printf("You lose!\n");
    elseif((tol=input(tol))==30)
    printf("I lose!\n");
    printf("********************Game Over********\n");
}
input(t)
int t;
{
    int a;
    do
    {
        printf("Please count:");
        scanf("%d",&a);
        if(a>2||a<1||t+a>30)
        printf("Error input,again!");
        elseprintf("You count:%d\n",t+a);
    }
    while(a>2||a<1||t+a>30);
    return(t+a);
}

copu(s)
int s;
{
    int c;
    printf("Computer count:");
    if((s+1)%3==0)
    printf("%d\n",++s);
    else if((s+2)%3==0)
    {
        s+=2;
        printf("%d\n",s);
    }

    else
    {
        c=random(2)+1;
        s+=c;
        printf("%d\n",s);
    }
    return(s);
}